Computer Aided Design of Radioelectronics Circuits

Lecturer:

Tutor:

Supervisor:

Department of Radioelectronics

Synopsis:

Corresponding models of semiconductor devices implemented in the PSpice and C. I. A. programs are presented with emphasis to practical applications in radioelectronic circuits. Models of linear elements used in radioelectronics are also presented. Algorithms for nonlinear circuit analysis and optimization of those programs are described in the sense of practical effect of their control parameters.

Requirements:

Syllabus of lectures:

1. Comparison of CAD programs for radioelectronic circuits

2. PN-junction diode model, Zener breakdown, temperature and noise models

3. Modified Gummel-Poon model of bipolar transistor

4. Shichman-Hodges and advanced models of J-FET

5. Sussman-Fort-Huang-Hantgan and Statz models of GaAs-FET

6. Dang and BSI models of MOS-FET; other models of FETs in SPICE

7. Models of transm. lines, oper. ampl., microwave elem. (s-parameters)

8. Solving the system of implicit algebraic-differential equations

9. Solving the system of sparse linear equations, general eigenvalue task

10. Sensitivity analysis, Marquardt-Levenberg method of optimization

11. FFT, steady-state analysis, intermodulation, worst-case analysis

12. Practical approach to solving the circuits: operating point analysis,

13. low and high frequency amplifiers, oscillators, relaxation generators,

14. mixers, modulators, demodulators, microwave circuits

Syllabus of tutorials:

1. The style of using the program C.I.A.: DOS procedure SHELL

2. Amplifier with bipolar transistor, schema got from editor EEDraw

3. Amplifier with frequency dependent feedback: analysis by sample

4. Colpitts oscillator: steady-state and harmonic analyses

5. Model identification from characteristics of BJT and GaAsFET

6. Analysis of fast logical circuits with BJTs and GaAsFETs

7. Analysis of astab. multivibrator and surge generator (from OrCAD)

8. Analysis of noise figure of microwave amplifier (from EEDraw)

9. Temp. dependencies, Spice voltage and current controlled sources

10. Description and tasks of direct current analysis in PSpice/Spice3

11. Description and tasks of frequency analysis in PSpice/Spice3

12. Description and tasks of transient analysis in PSpice/Spice3

13. Improvement of reliability and accuracy of static/dynamic analyses

14. Creation of schema and analysis parameters by graphic editor Sched

Study Objective:

Study materials:

[1] Dobeš, J.: Návrh radioelektronických obvodů počítačem. Skripta ČVUT, Praha 1997

[2] Massobrio, G., Antognetti, P.: Semiconductor Device Modeling With SPICE. McGraw-Hill, 1993

[3] Vladimirescu, A.: The SPICE Book. John Wiley & Sons, Inc., 1994

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Elektronika a sdělovací technika - bakalářský blok (compulsory elective course)